Apparatus and method performed by the same in wireless communication system

Abstract

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. An apparatus and a method performed by the same in a wireless communication system are disclosed. The method includes: receiving configuration information from a base station; and receiving a downlink signal from the base station based on the configuration information, the downlink signal including downlink data. The downlink data includes a unicast physical downlink shared channel (PDSCH) and/or a multicast/broadcast PDSCH, the unicast PDSCH includes a dynamically scheduled unicast PDSCH and/or a unicast semi-persistent scheduling (SPS) PDSCH, and the multicast/broadcast PDSCH includes a dynamically scheduled multicast/broadcast PDSCH and/or a multicast/broadcast SPS PDSCH. The present disclosure improves the efficiency of uplink or downlink transmission.

What is claimed is: 
     
       1. A method performed by a user equipment (UE) in a communication system, the method comprising:
 performing physical downlink control channel (PDCCH) monitoring to receive multicast downlink control information (DCI) formats with cyclic redundancy checks (CRCs) scrambled by group-radio network temporary identifiers (G-RNTIs); 
 determining a dynamic hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook including HARQ-ACK codebooks for the multicast DCI formats, wherein, in the dynamic HARQ-ACK codebook, the HARQ-ACK codebooks for the multicast DCI formats are ordered in ascending order of values of parameters corresponding to the HARQ-ACK codebooks for the multicast DCI formats; and 
 transmitting the dynamic HARQ-ACK codebook in a physical uplink shared channel (PUSCH) scheduled by an uplink grant DCI format, 
 wherein the uplink grant DCI format includes a downlink assignment index (DAI) field associated with the HARQ-ACK codebooks for the multicast DCI formats, and 
 wherein the DAI field indicates a value corresponding to a total DAI applied to each of the parameters to determine the HARQ-ACK codebooks for the multicast DCI formats in the dynamic HARQ-ACK codebook. 
 
     
     
       2. The method of  claim 1 , wherein the HARQ-ACK codebooks for the multicast DCI formats are multiplexed in the PUSCH. 
     
     
       3. The method of  claim 1 , further comprising performing PDCCH monitoring to receive unicast DCI formats with CRCs scrambled by cell-RNTIs (C-RNTIs),
 wherein the dynamic HARQ-ACK codebook includes HARQ-ACK codebooks for the unicast DCI formats concatenated with the HARQ-ACK codebooks for the multicast DCI formats, 
 wherein the G-RNTIs are respectively used for dynamically scheduled multicast and broadcast service (MBS) reception in a multicast physical downlink shared channel (PDSCH), and 
 wherein the C-RNTIs are respectively used for dynamically scheduled unicast PDSCH. 
 
     
     
       4. The method of  claim 1 , wherein counter DAIs included in the multicast DCI formats are counted per G-RNTI for determining the dynamic HARQ-ACK codebook. 
     
     
       5. The method of  claim 1 , wherein the parameters are the G-RNTIs. 
     
     
       6. A user equipment (UE) in a communication system, the UE comprising:
 a transceiver; and 
 a processor coupled with the transceiver and configured to:
 perform physical downlink control channel (PDCCH) monitoring to receive multicast downlink control information (DCI) formats with cyclic redundancy checks (CRCs) scrambled by group-radio network temporary identifiers (G-RNTIs); 
 determine a dynamic hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook including HARQ-ACK codebooks for the multicast DCI formats, wherein, in the dynamic HARQ-ACK codebook, the HARQ-ACK codebooks for the multicast DCI formats are ordered in ascending order of values of parameters corresponding to the HARQ-ACK codebooks for the multicast DCI formats; and 
 transmit the dynamic HARQ-ACK codebook in a physical uplink shared channel (PUSCH) scheduled by an uplink grant DCI format, 
 wherein the uplink grant DCI format includes a downlink assignment index (DAI) field associated with the HARQ-ACK codebooks for the multicast DCI formats, and 
 wherein the DAI field indicates a value corresponding to a total DAI applied to each of the parameters to determine the HARQ-ACK codebooks for the multicast DCI formats in the dynamic HARQ-ACK codebook. 
 
 
     
     
       7. The UE of  claim 6 , wherein the HARQ-ACK codebooks for the multicast DCI formats are multiplexed in the PUSCH. 
     
     
       8. The UE of  claim 6 , wherein the processor is configured to perform PDCCH monitoring to receive unicast DCI formats with CRCs scrambled by cell-RNTIs (C-RNTIs),
 wherein the dynamic HARQ-ACK codebook includes HARQ-ACK codebooks for the unicast DCI formats concatenated with the HARQ-ACK codebooks for the multicast DCI formats, 
 wherein the G-RNTIs are respectively used for dynamically scheduled multicast and broadcast service (MBS) reception in a multicast physical downlink shared channel (PDSCH), and 
 wherein the C-RNTIs are respectively used for dynamically scheduled unicast PDSCH. 
 
     
     
       9. The UE of  claim 6 , wherein counter DAIs included in the multicast DCI formats are counted per G-RNTI for determining the dynamic HARQ-ACK codebook. 
     
     
       10. The UE of  claim 6 , wherein the parameters are the G-RNTIs. 
     
     
       11. A method performed by a base station in a communication system, the method comprising:
 transmitting multicast downlink control information (DCI) formats with cyclic redundancy checks (CRCs) scrambled by group-radio network temporary identifiers (G-RNTIs); 
 transmitting an uplink grant DCI format scheduling a physical uplink shared channel PUSCH); and 
 receiving, in the PUSCH, a dynamic hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook including HARQ-ACK codebooks for the multicast DCI formats, 
 wherein, in the dynamic HARQ-ACK codebook, the HARQ-ACK codebooks for the multicast DCI formats are ordered in ascending order of values of parameters corresponding to the HARQ-ACK codebooks for the multicast DCI formats, 
 wherein the uplink grant DCI format includes a downlink assignment index (DAI) field associated with the HARQ-ACK codebooks for the multicast DCI formats, and 
 wherein the DAI field indicates a value corresponding to a total DAI applied to each of the parameters for the HARQ-ACK codebooks for the multicast DCI formats in the dynamic HARQ-ACK codebook. 
 
     
     
       12. The method of  claim 11 , wherein the HARQ-ACK codebooks for the multicast DCI formats are multiplexed in the PUSCH. 
     
     
       13. The method of  claim 11 , further comprising transmitting unicast DCI formats with CRCs scrambled by cell-RNTIs (C-RNTIs),
 wherein the dynamic HARQ-ACK codebook includes HARQ-ACK codebooks for the unicast DCI formats concatenated with the HARQ-ACK codebooks for the multicast DCI formats, 
 wherein the G-RNTIs are respectively used for dynamically scheduled multicast and broadcast service (MBS) transmission in a multicast physical downlink shared channel (PDSCH), and 
 wherein the C-RNTIs are respectively used for dynamically scheduled unicast PDSCH. 
 
     
     
       14. The method of  claim 11 , wherein counter DAIs included in the multicast DCI formats are determined per G-RNTI for transmitting the multicast DCI formats. 
     
     
       15. The method of  claim 11 , wherein the parameters are the G-RNTIs. 
     
     
       16. A base station in a communication system, the base station comprising:
 a transceiver; and 
 a processor coupled with the transceiver and configured to:
 transmit multicast downlink control information (DCI) formats with cyclic redundancy checks (CRCs) scrambled by group-radio network temporary identifiers (G-RNTIs); 
 transmit an uplink grant DCI format scheduling a physical uplink shared channel (PUSCH); and 
 receive, in the PUSCH, a dynamic hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook including HARQ-ACK codebooks for the multicast DCI formats, 
 
 wherein, in the dynamic HARQ-ACK codebook, the HARQ-ACK codebooks for the multicast DCI formats are ordered in ascending order of values of parameters corresponding to the HARQ-ACK codebooks for the multicast DCI formats, 
 wherein the uplink grant DCI format includes a downlink assignment index (DAI) field associated with the HARQ-ACK codebooks for the multicast DCI formats, and 
 wherein the DAI field indicates a value corresponding to a total DAI applied to each of the parameters for the HARQ-ACK codebooks for the multicast DCI formats in the dynamic HARQ-ACK codebook. 
 
     
     
       17. The base station of  claim 16 , wherein the HARQ-ACK codebooks for the multicast DCI formats are multiplexed in the PUSCH. 
     
     
       18. The base station of  claim 16 , wherein the processor is configured to transmit unicast DCI formats with CRCs scrambled by cell-RNTIs (C-RNTIs),
 wherein the dynamic HARQ-ACK codebook includes HARQ-ACK codebooks for the unicast DCI formats concatenated with the HARQ-ACK codebooks for the multicast DCI formats, 
 wherein the G-RNTIs are respectively used for dynamically scheduled multicast and broadcast service (MBS) transmission in a multicast physical downlink shared channel (PDSCH), and 
 wherein the C-RNTIs are respectively used for dynamically scheduled unicast PDSCH. 
 
     
     
       19. The base station of  claim 16 , wherein counter DAIs included in the multicast DCI formats are determined per G-RNTI for transmitting the multicast DCI formats. 
     
     
       20. The base station of  claim 16 , wherein the parameters are the G-RNTIs.